what can I take to grow more

[caligirl85]

good old creatine will work in most situations

 

[zedhed]

look for something that doesn't have a bunch of sugar in it

 

[SteveMobsterG]

More food.

 

[25homes]

Good lots of it

 

[MasonicBodybuilder]

Leaning how to eat and train for growth is what you need at your age. Guys are likely abusing steroids but not something you want to do and risk fucking up your HPTA.